Oh wow, I didn't tried it yet, but reading the doc, it looks exactly how I imagine the perfect "make"/"task runner" should work.
"make" frustrated me so many times. I'll definitely try "task".
This project does look cool, I'll probably give it a whirl too.
If you're open to ruby, rake is an awesome and powerful tool that is a ruby DSL implementation of make. Learning rake was one of the best investments I made. Even tho I'm a polyglot these days, I still often use rake, even tho it does make some golang people vomit :-)